Silicone Shock Absorber Set with Silicone Pad: There are eight sets of silicone shock absorber kits with silicone pad, 4 for 16mm and 4 for 18mm. Excellent Material: The hot bed leveling column is made of high quality heat-resistant and non-sticky silica gel to ensure our safety. Product Features: It has good high temperature resistance, strong fatigue resistance, shock absorption and energy absorption, and free adjustment. Good Stability: These 3D printers have good stability and can be used to replace the original bed springs. Easy to Install: A great accessory for 3D printers. The silicone pad is only installed in the original spring position. Just replace the spring. Description: Strong functionality, high temperature resistance and strong flexibility. Strong stability, can replace the spring. High quality silicone material, please rest assured to use it. Features: brown color Material: silica gel Size: 16 mm and 18 mm Scope of delivery:8 x silicone shock absorber silicone pad